Coating device



G. C. SNYDER.

COATING DEVICE.

APPLICATION FILED JULY 3, 1919.

1,391,281 PatentedSept. 20, 1921.

co INVENTOR M fv7-z. MQHJ flq ATTORNEYS UNITED STATES GEORGE o. SNYDER,OF NEW Yonx, 1v. Y.

COATING DEVICE.

1,391,281.. Original application-filed January 17,

To all whom it may concern: L

Be it known that I, GEORGE C. SNYDER, a citizen of the United States,residing at 123 West 44th street, New York, in the county of New Yorkand State of'New York,

have invented certain new and useful Improvements in a Coating Device;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention'relates to coating devices particularly adapted forapplying a film of li uid to sheets of material.

' t is an object of the invention to produce a device of this characterin which a sheet may be coatedby the simple 0 eratlon of being drawnover the device. he use of rollers, brushes or -similar parts which areusually employed in coating machines is thus avoided. The mechanism isof simple construction, contains few moving parts, may be easilyadjusted to apply films of different thickness, to sheets ofmaterial-'and possesses other advantages which will appear more clearlyfrom a description" of a preferred embodiment. For this purpose theinvention has been shown as employed for applying adhesive to a sheet ofmaterial preparatory to winding the same upona mandrel to produceangular hollow ware 1n accordance with my application Sei'ial No.

271,592 filed January 17 1919, of which this application is adivisionvIt will be understood, however, that the. invention is notlimited to the particular application shown, but is of general utilityand may be employed for applying liquids other than ad: hesive to sheetsof material which are not to be subjected to a winding operation. In

I the-accompanying drawing.:

Figure 1 is a perspective view of the apparatus having the inventionapplied thereto;

Fig. 2 is a view partly in longitudinal sec-f slack of the material atthe bottom of the tion of the coating device; and

Fig. 3 is a transverse section of the device along the line 3-3 of Fig;2.

p In the drawing, 1 represents 'a framework;

or bed upon which is a fixed bearing-2 carrying a shaft 3, the free endof which is supported by a bearing 4 hinged to the framework as at 5; Itwill be:understood that any other suitable-type of movable Specificationof Letters Patent. v Patented Sept. 20, 1921.

end of the shaft. The other endof the shaft is provided with one memberof a clutch 6, th other cooperating clutch member being mounted upon theend of a shaft I I 7 provided with a pulley 8 adapted to be driven fromany convenient source of power. The clutch 6 is controlledby an arm 9connected by means of a rod 10 to a handle (not shown) which maybe'placed 1n posltion to be conveniently manipulated by the operator ofthe machine.

Upop the shaft 3 is mounted a mandrel 11 provided withslightly convexfaces. The

body portion of the mandrel may be of solid I material, or hollow forthe sake of economy, and one corner of the body is in the form of aWedge 12 which is attached to the body by a dovetail connection, so thatthe wedge may be driven out after a form has been wound upon themandrel, to permit the form to be conveniently removed. As explained inthe application referred to above, the curvature imparted to the facesof the mandrel should be sufficient to cause a bind- 1ng action betweenthe convolutions of material as they are wound upon the mandrel,

but should not be so great as to prevent the article from assuming asubstantial flatsided contour when straight edged heads are applied tothe ends of the form.

The material 13 out of which the articles are formed is preferablysupplied in rolls which may be mounted upon a shaft 14 parallel to theshaft 3 and provided at one end with a pulley 15 connected by a crossedbelt 16 with a pulley 17 on the shaft 3, so that the shaft 14 is rotatedin a direction tounwind material from the supply roll, while the shaft 3is rotated simultaneously in a direction to .wind the material upon thetrough to allow for the variable speed at v'which the material is woundon the mandrel due to the angular shape of the latter. The material is"then carried upwardly over, a

shelf 19 against which it is pressed by spring fingers 20. To providefor adjusting the tension of the material as it is wound upon themandrehthe spring fingers are mounted upon a pivoted support 21prov1dedwith in my application referred to above.

a depending wedge shaped portion 22 en.- gaged bg a cam 23 on a shaft 24mounted in suita le bearin s attached to the shelf 19 and which may emanipulated by a gear and worm arrangement such as is shofvn stead ofthe mechanism described, any suita- .ble arrangement for producingtension of the material may be used. After passing over the shelf 19 andunder the. spring fingers 20 the material passes under a roller .25,then over the coating device of the insurface of the material comprlsesa horizontal pipe 27 screwed into an elbow 28 at one end and at theother end mounted in a su1table support 29. The' elbow 28 is connectedto a pipe 30 which in turn is connected to a valve 31, located below thelevel of pipe 27. Adhesive is supplied from the tank 32 through a pipe33 leading to the valve 31.

f necessary a burner 34 may be provided to keep the adhesive in liquidcondition, or

cold adhesive such as silicate of soda, may be used as a binder. Thevalve 31 may be manipulated. by a rod 35 connected to a. handle 36mounted in convenient position on the framework of the apparatus. Thepipe' 27 is provided with 'a longitudinal channel .37 communicating with'the interior of the pipethrough ducts 38. Extending from the top of thechannel 37 in the direction in which the material travels as it is drawnover the pipe are passages 39 through which adhesive may flow from thechannel onto the surface of the material. The passages 39 shouldpreferably register with the ducts 38 asshown most clearly in Fig. 2,and have their bottoms tangential to the pipe as shown in .Fig. 3. Itwill be understood that any number of ducts and passages may be employedand that they will be of sultable dimensions to permit the re uired flowof adhesive.

11 forming angular hollow ware by means of the apparatusdescribed above,a roll of suitable material is placed on the shaft 14 and unwound enoughto leave some slack at the bottom of the trough. The

material is then drawn over the shelf 19 under the fingers 20 whichshould be adjusted to exert little or .no pressure at this time. Thematerial is then carried under roller 25, over the adhesive supply pipe27 and around roller 26 to the mandrel 11. As the strip of material isdrawn over supply pipe 27 adhesive should be permitted to flow in orderthat the outer face of the first convolution of material shall be coatedso that the second convolution will be united to it.

In passing over roller 26 the material is turned so that the surfacewhich has been coated with adhesive comes uppermost, in proper positionto be wound pon the manthat at this time the bracket 4 is in posi-' tionto support the free end of shaft 3. When the Winding operationbegins,the spring fingers 20 should be adjusted to produce the requireddegree of tension asthe materials wound upon the mandrel. On ac-. countof the convexity of the faces of the mandrel successive convolutions ofthe material are firmly united to the proceeding convolutions, and owingto the greater distance' of the corners o the mandrel from the shaft,there will be an increased binding effect between the layers of materialat these points and they will be united into a compact mass to givestrong rigid corners to the finished article.

During the winding operation adhesiveis supplied'to the material fromthe pipe 27 through the'ducts and passages 38 and 39, and the amount ofadhesive applied to the material may be adjusted to the desired quantityby a slight rotation of the tube 27 about its axis. The screw connectionbetween the pipe and the elbow 28 will permit of this adjustment, but itwill be understood that any other arrangement may be employed forpermitting a slight rotation of the tube with respect to the pipingsystem through which adhesive is supplied. If, instead of occupying therelation with respect to the sheet of materialshown in Fig. 3, the tube27 is rotated slightly in a clockwise direction, the relation of thechannel and the passages with respect to the material will be such thata greater quantity of adhesive will be applied to the'surface of thematerial. If the pipe 27 is rotated in the opposite direction, therelation will be "changed so that'less adhesive will be supplied. Thearrangement thus permits one to obtain variations in the thickness ofthe film applied to the material by manipulation of the pipe 27,. whichmay be conveniently performed with liquids,

rial is adapted to bedrawn and having plied to the material cannot beproduced by the adjustment oi the apparatus as described above, otherpipes provided with channels, dutts and passages of different dimensionsmay be easily substituted for the original pipe, so that a wide range ofadjustability may be obtained with the apparatus.

The operation of winding the material upon the mandrel is continueduntil the walls of the article are of the required thickness, when thesupply of adhesive is cut off. By arranging the valve 31 below the levelof pipe 27, the supply of adhesive ceases as soon as the valve isclosed, there being no tendency ing in the pipe 2 to continue to flow onto the material as would be the case if the valve 31 were located abovethe level .of the p When the winding operation is completed the materialis severed, referably along a line adjacent to one of t e corners of thewound body Any adhesive on the outer face of the body w1ll finally dryand form a protecting coating. When the formation of'the body has beencompleted the bracket 4 is swung out of the way, the wedge 12 is drivenout and the body may be then removed from the mandrel for subsequenttreatment.

The above description shows one way in which the device of thisinvention may be employed, but it will be understood that it is ofgeneral utility and may be used for coatin any kind of material with anykind of liquid, and also that various changes may be made in the detailsof construction of the a paratus without departing from the principle ofthe invention as defined in the ap-' pended claims.

I claim:

1. In apparatus for coating sheet inaterial' with liquids, a member overwhich the material is adapted to be drawn and having an opening alongits upper side through which the liquid may flow to the surface of thematerial, and a valve placed belowfthe level of the opening forcontrolling the flow of liquid therethrough.

2. In apparatus for coating sheet material with liqulds, a member overwhich the materiaLis adapted to be drawn and having an opening throughwhich liquid may flow to the material, a valve placed below the level ofthe opening and adapted to control the flow ofliquid to the member, anda member; around which the sheet material travels after it has beencoated in order to bring the coated side of the material uppermost.

3. In apparatus for coating sheet material a member over which thematefor the adhesive remain-- passageways through which the liquid flowsto the material, and means for changing the angle of incidence of thematerial, with respect to the passageways to regulate the amount ofliquid applied to the surface of the material.

4. Apparatus for coating the underside of sheet material with acontinuous film of adhesive, comprising a pipe provided with acontinuous channel along the top. thereof in communication with theinterior of the pipe, the channel being of a length about equal to thewidth of the sheet material the top of the pipe being provided withlaterally extending passages in communication with said channel.

5. In apparatus 'for coating sheet material with liquids, a tubularmember provided ber, means for supplying liquid to the memher and aconnection between the means and the member to .permit the member to berotated about its longitudmal axis to vary the amount of liquid appliedto the sheetmaterial.

7. In a paratus for coating sheet material with liquids, a tubularmember having apertures communicating with the interior of the memberand passages extending from p the apertures in the direction in whichthe material is drawn over the member, and means for supplying liqpid tothe member comprising a part to w ich the member is secured, so that themember may be rotated about its axis to vary the quantlty of liquidsupplied through the passages to the sheet material as it is drawn overthe member.

8. In apparatus rial with liquids, a tubular member provided with alongitudinal channel along its outer 'face having communication with theinterior of the member, passages extending from. the top of the channelin the direction in which the material is drawn over the member, areservoir for holding liquid, a conduit for conve' ing liquid from thereservoir to the tubu ar member, a portion of said conduit being locatedbelow' the levelofthe' tubulan member, and a valve in the said portionof the conduit.

In testimony whereof I aflix my signature.

- GEORGE C. SNYDER.

